TLV1171

ACTIVE

1-A, low-dropout voltage regulator (tab GND)

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Data sheet

document-pdfAcrobat 1-A, Positive Fixed-Voltage, Low-Dropout Regulator datasheet

TLV1171

ACTIVE

Data sheet

Order now

Product details

Output options

Fixed Output

Iout (Max) (A)

1

Vin (Max) (V)

5.5

Vin (Min) (V)

2

Vout (Max) (V)

2.5

Vout (Min) (V)

1.2

Fixed output options (V)

1.2, 1.5, 1.8, 2.5

Noise (uVrms)

60

Iq (Typ) (mA)

0.05

Thermal resistance θJA (°C/W)

63

Rating

Catalog

Load capacitance (Min) (µF)

1

Regulated outputs (#)

1

Features

—

Accuracy (%)

1.3

PSRR @ 100 KHz (dB)

50

Dropout voltage (Vdo) (Typ) (mV)

455

Operating temperature range (C)

-40 to 125

Output options

Fixed Output

Iout (Max) (A)

1

Vin (Max) (V)

5.5

Vin (Min) (V)

2

Vout (Max) (V)

2.5

Vout (Min) (V)

1.2

Fixed output options (V)

1.2, 1.5, 1.8, 2.5

Noise (uVrms)

60

Iq (Typ) (mA)

0.05

Thermal resistance θJA (°C/W)

63

Rating

Catalog

Load capacitance (Min) (µF)

1

Regulated outputs (#)

1

Features

—

Accuracy (%)

1.3

PSRR @ 100 KHz (dB)

50

Dropout voltage (Vdo) (Typ) (mV)

455

Operating temperature range (C)

-40 to 125

SOT-223 (DCY)

4

46 mm² 6.5 x 7

Accuracy: 1.5% (typ)
Low I_Q: 100 µA (max)
- 500x Lower Than Standard 1117 Devices
V_IN: 2.0 V to 5.5 V
- Absolute Maximum V_IN: 6.0 V
Stable with 0-mA Output Current
Low Dropout: 455 mV at 1 A for V_OUT = 3.3 V
High PSRR: 65 dB at 1 kHz
Minimum Ensured Current Limit: 1.1 A
Stable with Cost-Effective Ceramic Capacitors:
- With 0-Ω ESR
Temperature Range: –40°C to +125°C
Thermal Shutdown and Overcurrent Protection
Available Package: SOT223
- See the Package Option Addendum at the end of this document for a complete list of available voltage options.

Accuracy: 1.5% (typ)
Low I_Q: 100 µA (max)
- 500x Lower Than Standard 1117 Devices
V_IN: 2.0 V to 5.5 V
- Absolute Maximum V_IN: 6.0 V
Stable with 0-mA Output Current
Low Dropout: 455 mV at 1 A for V_OUT = 3.3 V
High PSRR: 65 dB at 1 kHz
Minimum Ensured Current Limit: 1.1 A
Stable with Cost-Effective Ceramic Capacitors:
- With 0-Ω ESR
Temperature Range: –40°C to +125°C
Thermal Shutdown and Overcurrent Protection
Available Package: SOT223
- See the Package Option Addendum at the end of this document for a complete list of available voltage options.

The TLV1171 low-dropout (LDO) linear regulator is a low input voltage version of the popular 1117 voltage regulator.

The TLV1171 is an extremely low-power device that consumes 500x lower quiescent current than the traditional 1117 voltage regulator, making the TLV1171 suitable for applications that mandate very low standby current. The TLV1171 LDO is also stable with 0 mA of load current; there is no minimum load requirement, making the device an ideal choice for applications where the regulator is required to power very small loads during standby in addition to large currents on the order of 1 A during normal operation. The TLV1171 offers excellent line and load transient performance, resulting in very small magnitude output voltage undershoots and overshoots when the load current requirement changes from less than 1 mA to more than 500 mA.

A precision band gap and error amplifier provides 1.5% accuracy. A very high power-supply rejection ratio enables the device to be used for post-regulation after a switching regulator. Other valuable features include low output noise and low-dropout voltage.

The device is internally compensated to be stable with 0-Ω equivalent series resistance (ESR) capacitors. These key advantages enable the use of cost-effective, small-size ceramic capacitors. Cost-effective capacitors that have higher bias voltages and temperature derating can also be used if desired.

The TLV1171 is available in a SOT223 package. For alternate pin outs of the device, refer to the TLV1117LV.

The TLV1171 low-dropout (LDO) linear regulator is a low input voltage version of the popular 1117 voltage regulator.

The TLV1171 is an extremely low-power device that consumes 500x lower quiescent current than the traditional 1117 voltage regulator, making the TLV1171 suitable for applications that mandate very low standby current. The TLV1171 LDO is also stable with 0 mA of load current; there is no minimum load requirement, making the device an ideal choice for applications where the regulator is required to power very small loads during standby in addition to large currents on the order of 1 A during normal operation. The TLV1171 offers excellent line and load transient performance, resulting in very small magnitude output voltage undershoots and overshoots when the load current requirement changes from less than 1 mA to more than 500 mA.

A precision band gap and error amplifier provides 1.5% accuracy. A very high power-supply rejection ratio enables the device to be used for post-regulation after a switching regulator. Other valuable features include low output noise and low-dropout voltage.

The device is internally compensated to be stable with 0-Ω equivalent series resistance (ESR) capacitors. These key advantages enable the use of cost-effective, small-size ceramic capacitors. Cost-effective capacitors that have higher bias voltages and temperature derating can also be used if desired.

The TLV1171 is available in a SOT223 package. For alternate pin outs of the device, refer to the TLV1117LV.

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	Type	Title		Date
*	Data sheet	1-A, Positive Fixed-Voltage, Low-Dropout Regulator datasheet		11 Apr 2012
	User guide	TLV117125EVM-097 Evalutation Module		23 Feb 2012

Design & development

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Evaluation board

TLV117125EVM-097 — Evaluation Module for TLV117125 1A, Positive Fixed Voltage, Low-Dropout Linear Regulator

The Texas Instruments TLV117125EVM-097 Evaluation Module (EVM) demonstrates the proper operation of the TLV1117125 1A, Positive Fixed Voltage, Low-Dropout Linear Regulator. The EVM is a fully assembled, stand alone evaluation module. It contains a low-dropout regulator IC for positive fixed (...)

User guide: PDF